There's no one thing that is true. They're all true.

I know now that there is no one thing that is true - it is all true.

All good books have one thing in common - they are truer than if they had really happened.

Time is the least thing we have of.

Once we have a war there is only one thing to do. It must be won. For defeat brings worse things than any that can ever happen in war.

The shortest answer is doing the thing.